Ultrastrong composites from dopamine modified-polymer-infiltrated colloidal crystals

F. Liaqat; M. N. Tahir; H. Huesmann; P. Daniel; M. Kappl; G. K. Auernhammer; D. Schneider; I. Lieberwirth; K. Char; G. Fytas; H.-J. Butt; W. Tremel

doi:10.1039/C5MH00016E

Ultrastrong composites from dopamine modified-polymer-infiltrated colloidal crystals†

F. Liaqat,^a M. N. Tahir,*^a H. Huesmann,^a P. Daniel,^a M. Kappl,^b G. K. Auernhammer,^b D. Schneider,^b I. Lieberwirth,^b K. Char,^c G. Fytas,^bd H.-J. Butt^b and W. Tremel*^a

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^a Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55099 Mainz, Germany
E-mail: tremel@uni-mainz.de, tahir@uni-mainz.de
Fax: +49-6131-39-25605
Tel: +49-6131-39-25135

^b Max Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany

^c School of Biological and Chemical Engineering, Center for Functional Polymer Thin Films, Seoul National University, Seoul 151-744, South Korea

^d Department of Materials Science, University of Crete and IESL/FORTH, 71110 Heraklion, Greece

Abstract

Although strong and stiff synthetic composites have long been developed, the microstructure of today's most advanced composites has yet to achieve the sophisticated hierarchy of hybrid materials built up by living organisms. We have assembled hard and tough multilayered nanocomposites, which contain alternating layers of Fe₃O₄ nanoparticles and a 3-hydroxy-tyramine (dopamine) substituted polymer (dopamine modified polymer), strongly cemented together by chelation through infiltration of the polymer into the Fe₃O₄ mesocrystal. With a Young's modulus of 17 ± 3 GPa and a hardness of 1.3 ± 0.4 GPa the nanocomposite exhibits high resistance against elastic as well as plastic deformation. Key features leading to the high strength are the strong adhesion of the polymer to the inorganic nanoparticles and the layered assembly.

Materials Horizons

Ultrastrong composites from dopamine modified-polymer-infiltrated colloidal crystals†

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Ultrastrong composites from dopamine modified-polymer-infiltrated colloidal crystals

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